2003 Alpina B3 vs. 2005 Audi RS6
To start off, 2005 Audi RS6 is newer by 2 year(s). Which means there will be less support and parts availability for 2003 Alpina B3. In addition, the cost of maintenance, including insurance, on 2003 Alpina B3 would be higher. At 4,172 cc (8 cylinders), 2005 Audi RS6 is equipped with a bigger engine. In terms of performance, 2005 Audi RS6 (444 HP @ 5700 RPM) has 143 more horse power than 2003 Alpina B3. (301 HP @ 6200 RPM) In normal driving conditions, 2005 Audi RS6 should accelerate faster than 2003 Alpina B3. With that said, vehicle weight also plays an important factor in acceleration. 2005 Audi RS6 weights approximately 220 kg more than 2003 Alpina B3. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Audi RS6 is four wheel drive (4WD), it will have significant more traction and grip than 2003 Alpina B3. In wet, icy, snow, or gravel driving conditions, 2005 Audi RS6 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2005 Audi RS6 (580 Nm @ 1950 RPM) has 218 more torque (in Nm) than 2003 Alpina B3. (362 Nm @ 4800 RPM). This means 2005 Audi RS6 will have an easier job in driving up hills or pulling heavy equipment than 2003 Alpina B3.
Compare all specifications:
| 2003 Alpina B3 | 2005 Audi RS6 | |
| Make | Alpina | Audi |
| Model | B3 | RS6 |
| Year Released | 2003 | 2005 |
| Body Type | Convertible | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3344 cc | 4172 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 5 valves |
| Horse Power | 301 HP | 444 HP |
| Engine RPM | 6200 RPM | 5700 RPM |
| Torque | 362 Nm | 580 Nm |
| Torque RPM | 4800 RPM | 1950 RPM |
| Engine Bore Size | 87 mm | 84.5 mm |
| Engine Stroke Size | 93.8 mm | 93 mm |
| Engine Compression Ratio | 10.0:1 | 9.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | 4WD |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1645 kg | 1865 kg |
| Vehicle Length | 4490 mm | 4840 mm |
| Vehicle Width | 1760 mm | 1860 mm |
| Vehicle Height | 1360 mm | 1400 mm |
| Wheelbase Size | 2730 mm | 2760 mm |
| Fuel Tank Capacity | 63 L | 82 L |
